I'm a little confused by this recipe - the roulade appears to be some sort of flatbread in the picture, but it has so little flour in the recipe. If it is a bread-like texture, I would be inclined to try a focaccia type recipe.

Otherwise, how about something entirely different, like this seitan roulade: Vegan YumYum seitan roulade or any of the other myriad things that come up when you google "vegan roulade."